class_docstr: Class to contain the attributes of a single node in the BKTree.
code: def __init__(
      self, node_name: str, node_value: str, parent_name: str = None
  ) -> None:
      self.node_name = node_name
      self.node_value = node_value
      self.parent_name = parent_name
      self.children = {}
  
file_path: imagededup/imagededup/handlers/search/bktree.py
imports: import copy
  from typing import Callable, Dict, Tuple
label_desc: Use image node_id 1 to create a new BkTreeNode object  with example: obj = BkTreeNode(node_name, node_value, parent_name)